131] 



RATE OF REGENERATION —ZELENY 



131 



TABLE 72 



Amblystoma punctatum Series 3962-4004 



Percentage increment per day at different times during the regenerative process 



Experiment VII 



Amblystoma punctatum 

 Series 4101-4540 



Forelegs 



The experiment consists of the study of the rate of regeneration 

 of single completely removed fore-legs under three degrees of injury 

 to the individual : without additional injury, with the other fore-leg re- 

 moved at the same time and with the other fore-leg plus one-half of the 

 tail removed . Measurements were made at 2, 4, 6, 8, 10, 12, 14, 16 and 

 19 days. The rates of regeneration are given in Table 73. The maxi- 

 mum rate does not come until the 14 to 16 period. The percentage 

 increments are given in Table 74. The highest value comes during the 

 2 to 4 day period. There is a gradual decrease from this time. 



On the whole the data for the leg regeneration show a more 

 extended period than do the tail regenerations^ 



